CVE-2026-15282 Instant Appointment <= 1.2 - Unauthenticated Arbitrary File Upload
Unauthenticated attackers can upload arbitrary files via the Instant Appointment plugin, potentially leading to remote code execution on the server.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-15282?
CVE-2026-15282 is a critical vulnerability in tenteeglobal Instant Appointment, published on 10 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The Instant Appointment plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the 'insapp_upload_image_as_attachment' function in all versions up to, and including, 1.2. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected site's server which may make remote code execution possible.
Weakness: CWE-434
Which versions are affected by CVE-2026-15282?
How do I fix CVE-2026-15282?
No fix has been published for CVE-2026-15282 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-15282 being exploited?
There is no known exploitation of CVE-2026-15282 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as GHSA-xp53-g87w-p23f.